Questions & Answers about Voy a afinar la guitarra.
Voy a + infinitive is a very common way to talk about the near future in Spanish, especially in everyday speech.
So:
Both are correct, but voy a afinar often sounds more natural in conversation when you mean something you’re about to do or intend to do soon.
In voy a afinar, the a is part of the fixed structure ir a + infinitive.
This structure means to be going to do something:
So in your sentence:
- Voy a afinar la guitarra = I’m going to tune the guitar
This a is not the same as the personal a used before some direct objects.